Twisting filler pen



G. L. BASSETT 1,965,626

VTWISTING FILLER PEN July 10, 1934.

Filed Feb. 9, 1934 Patented July 10, 1934 1,965,626

TWVISTIN G FILLER PEN Gerald L. Bassett, Toledo, Ohio, assignor to The Conklin Pen Company, Toledo, Ohio, a corporation of Ohio Application February 9, 1934, Seriai No. 710,448

4 Claims. (01. 120-46) This invention relates to fountain pens, and For instance, the cap 6 is usually formed of hard particularly to those of the twisting filler type. rubber, or other suitable non-metallic material, In pens of this type, a rotatable control memwhich has a metallic member 7 molded therein her for the twisting operation is provided on the and into'which member the end of the stem has a I I barrel end and has threaded connection therepressed fit, as shown. The outer end. of the plug with, so that the application of a continued turn- 2 has a centrally disposed axial projection 8, ing force on the member, after it has reached a which is reduced in diameter relative to the flange holding position, causes such a frictional binding 4. The cap 6 has its bottom provided with a of t p s a in any cases to qui effectually recess 9 to freely receive the plug extension 8 and 10 lock hem against e s tu n ng releasing to permit the inner end edge portion of the cap movements, except by the application of suitable to seat against the adjacent side of the plug tools, thus, in many instances, necessitating re-- flange 4 when the cap is screwed home. turning the pen to the factory for such purpose. A. more complete showing and description of a The Object of the invention is the provisien, pen of this character is contained in United in combination with a pen of this Charact 0 States Letters Patent No. 1,937,107, issued Novem' 70 simple and eilicient means to permit a tightening bar 28, 1933, t A dr Bi t i of the control member relative to the pen barrel In carrying out the idea of the present i to r s st a turning of he member under light tion, the side edge of the plug extension 8 and Pressure, and at the Same time to prevent Such the inner side wall of the cap recess 9 are provided '20 a tightening thereof as to, in effect, lock the parts ith coasting stop lugs 10 and 11, respectively, together. which serve to stop a turning of the cap 6 at pre- The invention is fully desc b d in h f0110W- determined points in either direction relative to ing specification, and one embodiment illustrated th plug 2. The faces of the lugs 10 and 11, in the acco p y d aw in which engage to stop a relative tightening or 1 Figure 1 is a side elevatio f a pe embodying screwing home movement of the cap 6 and plug the inventi0n; F 2 an enlarged fragmentary 2, are so disposed as to have stop coaction before elevation of the rear e d por of t p With the parts have been sufiiciently tightened to effect pa ts n Central longitudinal Section; 3 is a such a binding thereof as to, in efiect, lock the section on the line 33 in with parts in parts against unturning movements without the full, and Fig. 4 is a cross-section on the line 4-4 use of 1 t th same time, t permit a in Fig. 2. sufiicient tightening thereof as to prevent a too Re ng t the drawing, 1 designates the free unturning movement of the cap. barrel of a pen with which the invention is asso- The molded materials, from which pen barrels elated, a d 2 a p Which is preferably thread-ed and coacting filler parts are customarily made, in the rear end of the barrel and cooperates with are of a more yielding nature th t l a stem 3, threaded axially therethrough, to close it, th refore fr quently happens t t t t tthe barrel end. The plug 2 is provided near its mg control cap 6 is turned into Such binding outer end with an annular flange 4; for shouldered engagement with member on which it Seats abutment against bartel Such i that the parts cannot be separated without danger. 5 4: preferably Correspondmg m penpheml slhpe of breaking or by the use of suitable tools for' h e s t i n i s a tt ciiz i any suitable or con such. puipose h purpose pres.en.t

venient manner to the rear end of a twisting filler Ventlon is to provlde sajfe m' for member 5, the forward end of which is anchored the control Wh1ch i prevent What in the barrel and open to the forward filling end may be termed lowing c0a@i10n 0f Partsf, "i of the pen, as well understood in the art, so th t and at the same time permit a suff cient frictional turning of the stem from normal position will binding of the Parts to accomplish the normal efiect a twisting of the member 5 to exhaust air holding tension desired. The relative positions therefrom preparatory to releasing the stem and of the stop lugs when the cap and plug are in 59 permitting an untwisting of the member and a very slight frictional binding engagement is indi-x consequent suction action through the filling end cated in Fig. 4, the arrow indicating the locking of the barrel. direction of movement, and shows that the lug The outer end of the stem 3 projects beyond 11 on the cap has still some movement to go bethe outer end of the plug 2 and has a control knob fore it comes into stop coaction with the lug 10,

or cap 6 fixed thereto in any suitable manner. and such stop coaction is efiected before the cap has been tightened sufficiently on the plug 2 to efiect a so-called locking engagement thereof.

It is preferable to have the threaded connections between the plug 2 and barrel 1 and between the stem 3 and plug 2 of reverse order, so that a tightening of the cap 6 will tend to loosen rather than totighten theplug in the barrel.

I wish it understood that my invention is not limited to any specific construction, form or arrangement of the parts, as it is capable of numerous modifications and changes without. departing from the spirit of the claims.

Having thus described my invention, what I claim as new, and desire to secure by United States Letters Patent, is:

1. In a pen of the class described, a barrel, a twisting filler stem in threaded connection with the barrel, a cap fixed to the outer end of the stem and adapted to frictionally seatagainst a barrel part, and means including coacting stop :portions on the barreland cap permitting limited relative turning movements thereof and effecting a stopping of thehome turning movement of the capafter it has frictional binding engagement with .the barrel part and before such binding engagement has become sufiicient to substantially lock the cap, against unturning movements rela- .ttive to-thebarrel.

2. In a pen of the class described, a pen barrel, a, plug threaded in the rear end of the barrel and having a peripheral flange seating against the barrel .endand an outer end extension restricted with respectito the flange, a twisting filler stem threaded through said plug, a control cap fixed to the outer end of the stem and adapted to have seating engagement against said flange predetermined points in both twisting and unadapted to seat against a barrel part in one direction of turning of the cap and stem, said barrel and capeach having a single stop lug which lugs coact to positively stop the turning of the cap at twisting movements thereof relative to the barrel, also said lugs being adapted to permit an easily releasable binding engagement of the cap and coacting barrel part and prevent a locking engagement thereof in one direction of turning movement of the cap relative to the barrel.

'4. In a pen of the class described, a pen barrel, a plug attached to the rear end of the barrel, a twisting filler stem threaded through said plug axially of the barrel, a cap fixed to the enters-.100 end of the stem and adapted to frictionally-seat against the plug, each of said plug and capihaving a stop thereon adapted to coact to permit limited relative turning movements thereof in each direction and efiecting a stopping of the home turning;,105 movement of the cap after it has frictional binding engagement with the plug and before-such binding engagement has become suficient'to-substantially lock the capagainst unturning'movement relative to the plug.

GERALD L. BASSE'I'I. 

